Slow light in flight imaging

Wilson, Kali; Little, Bethany; Gariépy, Geneviève; Henderson, R. C. W.; Howell, John; Faccio, Daniele

doi:10.1109/cleoe-eqec.2017.8087364

Cited by 5 publications

(5 citation statements)

References 11 publications

(5 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Side imaging had previously been used to observe the propagation of atomic coherences in Bose-Einstein condensates [46,47] and hot atomic vapours [48]. The use of side imaging to expose the dynamics of SL was first demonstrated by Everett et al [49].…”

Section: Imaging the Atomic Coherencementioning

confidence: 99%

Stationary Light in Atomic Media

et al. 2019

View full text Add to dashboard Cite

When ensembles of atoms interact with coherent light fields, a great many interesting and useful effects can be observed. In particular, the group velocity of the coherent fields can be modified dramatically. Electromagnetically induced transparency is perhaps the best known example, giving rise to very slow light. Careful tuning of the optical fields can also produce stored light where a light field is mapped completely into a coherence of the atomic ensemble. In contrast to stored light, in which the optical field is extinguished, stationary light is a bright field of light with a group velocity of zero. Stationary light has applications in situations where it is important to maintain an optical field, such as attempts to engineer large nonlinear interactions. In this paper, the stationary light demonstrations published to date are reviewed and a unified theoretical framework that describes the experimental observations is provided. Possible applications of stationary light are also discussed, with a particular focus on all‐optical phase gates for quantum information technology.

show abstract

Section: Imaging the Atomic Coherencementioning

confidence: 99%

Stationary Light in Atomic Media

et al. 2019

View full text Add to dashboard Cite

show abstract

“…This becomes also particularly interesting at the single photon level with applications for quantum communication and computation [102,103]. SPAD cameras have been used to directly measure slow light [104]. The single photon nature of SPAD detection also implies that optical delays of single photons can be characterised.…”

Section: Tracking Of Moving Targets Around a Cornermentioning

confidence: 99%

A trillion frames per second: the techniques and applications of light-in-flight photography

Faccio

Velten

2018

Rep. Prog. Phys.

Self Cite

View full text Add to dashboard Cite

Cameras capable of capturing videos at a trillion frames per second allow to freeze light in motion, a very counterintuitive capability when related to our everyday experience in which light appears to travel instantaneously. By combining this capability with computational imaging techniques, new imaging opportunities emerge such as 3D imaging of scenes that are hidden behind a corner, the study of relativistic distortion effects, imaging through diffusive media and imaging of ultrafast optical processes such as laser ablation, supercontinuum and plasma generation. We provide an overview of the main techniques that have been developed for ultra-high speed photography with a particular focus on 'light-in-flight' imaging, i.e. applications where the key element is the imaging of light itself at frame rates that allow to freeze its motion and therefore extract information that would otherwise be blurred out and lost.

show abstract

“…The type of scattering that is observed is dependent on the medium that the light propagates through. For example, light has been captured propagating through fibre optics [11] and heated rubidium vapor [12]. When light travels through air, Rayleigh scattering is the dominant effect, and this was captured by Gariepy el al.…”

Section: Introductionmentioning

confidence: 99%

Intensity-corrected 4D light-in-flight imaging

Morland,

Zhu,

Martin

et al. 2021

Preprint

View full text Add to dashboard Cite

Light-in-flight (LIF) imaging is the measurement and reconstruction of light's path as it moves and interacts with objects. It is well known that relativistic effects can result in apparent velocities that differ significantly from the speed of light. However, less well known is that Rayleigh scattering and the effects of imaging optics can lead to observed intensities changing by several orders of magnitude along light's path. We develop a model that enables us to correct for all of these effects, thus we can accurately invert the observed data and reconstruct the true intensity-corrected optical path of a laser pulse as it travels in air. We demonstrate the validity of our model by observing the photon arrival time and intensity distribution obtained from single-photon avalanche detector (SPAD) array data for a laser pulse propagating towards and away from the camera. We can then reconstruct the true intensity-corrected path of the light in four dimensions (three spatial dimensions and time).

show abstract

Slow light in flight imaging

Cited by 5 publications

References 11 publications

Stationary Light in Atomic Media

Stationary Light in Atomic Media

A trillion frames per second: the techniques and applications of light-in-flight photography

Intensity-corrected 4D light-in-flight imaging

Contact Info

Product

Resources

About